<?php
/**
 * PHPExcel
 *
 * Copyright (c) 2006 - 2011 PHPExcel
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * @category   PHPExcel
 * @package    PHPExcel_Reader
 * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
 * @version    1.7.6, 2011-02-27
 */


/** PHPExcel root directory */
if (!defined('PHPEXCEL_ROOT')) {
    /**
     * @ignore
     */
    define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');
    require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
}

/**
 * PHPExcel_Reader_Excel2003XML
 *
 * @category   PHPExcel
 * @package    PHPExcel_Reader
 * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
 */
class PHPExcel_Reader_Excel2003XML implements PHPExcel_Reader_IReader
{
    /**
     * Read data only?
     *
     * @var boolean
     */
    private $_readDataOnly = false;

    /**
     * Restict which sheets should be loaded?
     *
     * @var array
     */
    private $_loadSheetsOnly = null;

    /**
     * Formats
     *
     * @var array
     */
    private $_styles = array();

    /**
     * PHPExcel_Reader_IReadFilter instance
     *
     * @var PHPExcel_Reader_IReadFilter
     */
    private $_readFilter = null;


    /**
     * Read data only?
     *
     * @return boolean
     */
    public function getReadDataOnly() {
        return $this->_readDataOnly;
    }

    /**
     * Set read data only
     *
     * @param boolean $pValue
     * @return PHPExcel_Reader_Excel2003XML
     */
    public function setReadDataOnly($pValue = false) {
        $this->_readDataOnly = $pValue;
        return $this;
    }

    /**
     * Get which sheets to load
     *
     * @return mixed
     */
    public function getLoadSheetsOnly()
    {
        return $this->_loadSheetsOnly;
    }

    /**
     * Set which sheets to load
     *
     * @param mixed $value
     * @return PHPExcel_Reader_Excel2003XML
     */
    public function setLoadSheetsOnly($value = null)
    {
        $this->_loadSheetsOnly = is_array($value) ?
            $value : array($value);
        return $this;
    }

    /**
     * Set all sheets to load
     *
     * @return PHPExcel_Reader_Excel2003XML
     */
    public function setLoadAllSheets()
    {
        $this->_loadSheetsOnly = null;
        return $this;
    }

    /**
     * Read filter
     *
     * @return PHPExcel_Reader_IReadFilter
     */
    public function getReadFilter() {
        return $this->_readFilter;
    }

    /**
     * Set read filter
     *
     * @param PHPExcel_Reader_IReadFilter $pValue
     * @return PHPExcel_Reader_Excel2003XML
     */
    public function setReadFilter(PHPExcel_Reader_IReadFilter $pValue) {
        $this->_readFilter = $pValue;
        return $this;
    }

    /**
     * Create a new PHPExcel_Reader_Excel2003XML
     */
    public function __construct() {
        $this->_readFilter     = new PHPExcel_Reader_DefaultReadFilter();
    }

    /**
     * Can the current PHPExcel_Reader_IReader read the file?
     *
     * @param     string         $pFileName
     * @return     boolean
     */
    public function canRead($pFilename)
    {

//    Office                    xmlns:o="urn:schemas-microsoft-com:office:office"
//    Excel                    xmlns:x="urn:schemas-microsoft-com:office:excel"
//    XML Spreadsheet            xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet"
//    Spreadsheet component    xmlns:c="urn:schemas-microsoft-com:office:component:spreadsheet"
//    XML schema                 xmlns:s="uuid:BDC6E3F0-6DA3-11d1-A2A3-00AA00C14882"
//    XML data type            xmlns:dt="uuid:C2F41010-65B3-11d1-A29F-00AA00C14882"
//    MS-persist recordset    xmlns:rs="urn:schemas-microsoft-com:rowset"
//    Rowset                    xmlns:z="#RowsetSchema"
//

        $signature = array(
                '<?xml version="1.0"',
                '<?mso-application progid="Excel.Sheet"?>'
            );

        // Check if file exists
        if (!file_exists($pFilename)) {
            throw new Exception("Could not open " . $pFilename . " for reading! File does not exist.");
        }

        // Read sample data (first 2 KB will do)
        $fh = fopen($pFilename, 'r');
        $data = fread($fh, 2048);
        fclose($fh);

        $valid = true;
        foreach($signature as $match) {
            // every part of the signature must be present
            if (strpos($data, $match) === false) {
                $valid = false;
                break;
            }
        }

        return $valid;
    }

    /**
     * Reads names of the worksheets from a file, without parsing the whole file to a PHPExcel object
     *
     * @param     string         $pFilename
     * @throws     Exception
     */
    public function listWorksheetNames($pFilename)
    {
        // Check if file exists
        if (!file_exists($pFilename)) {
            throw new Exception("Could not open " . $pFilename . " for reading! File does not exist.");
        }

        $worksheetNames = array();

        $xml = simplexml_load_file($pFilename);
        $namespaces = $xml->getNamespaces(true);

        $xml_ss = $xml->children($namespaces['ss']);
        foreach($xml_ss->Worksheet as $worksheet) {
            $worksheet_ss = $worksheet->attributes($namespaces['ss']);
            $worksheetNames[] = $worksheet_ss['Name'];
        }

        return $worksheetNames;
    }


    /**
     * Loads PHPExcel from file
     *
     * @param     string         $pFilename
     * @return     PHPExcel
     * @throws     Exception
     */
    public function load($pFilename)
    {
        // Create new PHPExcel
        $objPHPExcel = new PHPExcel();

        // Load into this instance
        return $this->loadIntoExisting($pFilename, $objPHPExcel);
    }

    private static function identifyFixedStyleValue($styleList,&$styleAttributeValue) {
        $styleAttributeValue = strtolower($styleAttributeValue);
        foreach($styleList as $style) {
            if ($styleAttributeValue == strtolower($style)) {
                $styleAttributeValue = $style;
                return true;
            }
        }
        return false;
    }

     /**
      * pixel units to excel width units(units of 1/256th of a character width)
      * @param pxs
      * @return
      */
     private static function _pixel2WidthUnits($pxs) {
        $UNIT_OFFSET_MAP = array(0, 36, 73, 109, 146, 182, 219);

        $widthUnits = 256 * ($pxs / 7);
        $widthUnits += $UNIT_OFFSET_MAP[($pxs % 7)];
        return $widthUnits;
    }

    /**
     * excel width units(units of 1/256th of a character width) to pixel units
     * @param widthUnits
     * @return
     */
    private static function _widthUnits2Pixel($widthUnits) {
        $pixels = ($widthUnits / 256) * 7;
        $offsetWidthUnits = $widthUnits % 256;
        $pixels += round($offsetWidthUnits / (256 / 7));
        return $pixels;
    }


    private static function _hex2str($hex) {
        return chr(hexdec($hex[1]));
    }

    /**
     * Loads PHPExcel from file into PHPExcel instance
     *
     * @param     string         $pFilename
     * @param    PHPExcel    $objPHPExcel
     * @return     PHPExcel
     * @throws     Exception
     */
    public function loadIntoExisting($pFilename, PHPExcel $objPHPExcel)
    {
        $fromFormats    = array('\-',    '\ ');
        $toFormats        = array('-',    ' ');

        $underlineStyles = array (
                PHPExcel_Style_Font::UNDERLINE_NONE,
                PHPExcel_Style_Font::UNDERLINE_DOUBLE,
                PHPExcel_Style_Font::UNDERLINE_DOUBLEACCOUNTING,
                PHPExcel_Style_Font::UNDERLINE_SINGLE,
                PHPExcel_Style_Font::UNDERLINE_SINGLEACCOUNTING
            );
        $verticalAlignmentStyles = array (
                PHPExcel_Style_Alignment::VERTICAL_BOTTOM,
                PHPExcel_Style_Alignment::VERTICAL_TOP,
                PHPExcel_Style_Alignment::VERTICAL_CENTER,
                PHPExcel_Style_Alignment::VERTICAL_JUSTIFY
            );
        $horizontalAlignmentStyles = array (
                PHPExcel_Style_Alignment::HORIZONTAL_GENERAL,
                PHPExcel_Style_Alignment::HORIZONTAL_LEFT,
                PHPExcel_Style_Alignment::HORIZONTAL_RIGHT,
                PHPExcel_Style_Alignment::HORIZONTAL_CENTER,
                PHPExcel_Style_Alignment::HORIZONTAL_CENTER_CONTINUOUS,
                PHPExcel_Style_Alignment::HORIZONTAL_JUSTIFY
            );

        $timezoneObj = new DateTimeZone('Europe/London');
        $GMT = new DateTimeZone('UTC');


        // Check if file exists
        if (!file_exists($pFilename)) {
            throw new Exception("Could not open " . $pFilename . " for reading! File does not exist.");
        }

        $xml = simplexml_load_file($pFilename);
        $namespaces = $xml->getNamespaces(true);

        $docProps = $objPHPExcel->getProperties();
        if (isset($xml->DocumentProperties[0])) {
            foreach($xml->DocumentProperties[0] as $propertyName => $propertyValue) {
                switch ($propertyName) {
                    case 'Title' :
                            $docProps->setTitle($propertyValue);
                            break;
                    case 'Subject' :
                            $docProps->setSubject($propertyValue);
                            break;
                    case 'Author' :
                            $docProps->setCreator($propertyValue);
                            break;
                    case 'Created' :
                            $creationDate = strtotime($propertyValue);
                            $docProps->setCreated($creationDate);
                            break;
                    case 'LastAuthor' :
                            $docProps->setLastModifiedBy($propertyValue);
                            break;
                    case 'LastSaved' :
                            $lastSaveDate = strtotime($propertyValue);
                            $docProps->setModified($lastSaveDate);
                            break;
                    case 'Company' :
                            $docProps->setCompany($propertyValue);
                            break;
                    case 'Category' :
                            $docProps->setCategory($propertyValue);
                            break;
                    case 'Manager' :
                            $docProps->setManager($propertyValue);
                            break;
                    case 'Keywords' :
                            $docProps->setKeywords($propertyValue);
                            break;
                    case 'Description' :
                            $docProps->setDescription($propertyValue);
                            break;
                }
            }
        }
        if (isset($xml->CustomDocumentProperties)) {
            foreach($xml->CustomDocumentProperties[0] as $propertyName => $propertyValue) {
                $propertyAttributes = $propertyValue->attributes($namespaces['dt']);
                $propertyName = preg_replace_callback('/_x([0-9a-z]{4})_/','PHPExcel_Reader_Excel2003XML::_hex2str',$propertyName);
                $propertyType = PHPExcel_DocumentProperties::PROPERTY_TYPE_UNKNOWN;
                switch((string) $propertyAttributes) {
                    case 'string' :
                        $propertyType = PHPExcel_DocumentProperties::PROPERTY_TYPE_STRING;
                        $propertyValue = trim($propertyValue);
                        break;
                    case 'boolean' :
                        $propertyType = PHPExcel_DocumentProperties::PROPERTY_TYPE_BOOLEAN;
                        $propertyValue = (bool) $propertyValue;
                        break;
                    case 'integer' :
                        $propertyType = PHPExcel_DocumentProperties::PROPERTY_TYPE_INTEGER;
                        $propertyValue = intval($propertyValue);
                        break;
                    case 'float' :
                        $propertyType = PHPExcel_DocumentProperties::PROPERTY_TYPE_FLOAT;
                        $propertyValue = floatval($propertyValue);
                        break;
                    case 'dateTime.tz' :
                        $propertyType = PHPExcel_DocumentProperties::PROPERTY_TYPE_DATE;
                        $propertyValue = strtotime(trim($propertyValue));
                        break;
                }
                $docProps->setCustomProperty($propertyName,$propertyValue,$propertyType);
            }
        }

        foreach($xml->Styles[0] as $style) {
            $style_ss = $style->attributes($namespaces['ss']);
            $styleID = (string) $style_ss['ID'];
//            echo 'Style ID = '.$styleID.'<br />';
            if ($styleID == 'Default') {
                $this->_styles['Default'] = array();
            } else {
                $this->_styles[$styleID] = $this->_styles['Default'];
            }
            foreach ($style as $styleType => $styleData) {
                $styleAttributes = $styleData->attributes($namespaces['ss']);
//                echo $styleType.'<br />';
                switch ($styleType) {
                    case 'Alignment' :
                            foreach($styleAttributes as $styleAttributeKey => $styleAttributeValue) {
//                                echo $styleAttributeKey.' = '.$styleAttributeValue.'<br />';
                                $styleAttributeValue = (string) $styleAttributeValue;
                                switch ($styleAttributeKey) {
                                    case 'Vertical' :
                                            if (self::identifyFixedStyleValue($verticalAlignmentStyles,$styleAttributeValue)) {
                                                $this->_styles[$styleID]['alignment']['vertical'] = $styleAttributeValue;
                                            }
                                            break;
                                    case 'Horizontal' :
                                            if (self::identifyFixedStyleValue($horizontalAlignmentStyles,$styleAttributeValue)) {
                                                $this->_styles[$styleID]['alignment']['horizontal'] = $styleAttributeValue;
                                            }
                                            break;
                                    case 'WrapText' :
                                            $this->_styles[$styleID]['alignment']['wrap'] = true;
                                            break;
                                }
                            }
                            break;
                    case 'Borders' :
                            foreach($styleData->Border as $borderStyle) {
                                $borderAttributes = $borderStyle->attributes($namespaces['ss']);
                                $thisBorder = array();
                                foreach($borderAttributes as $borderStyleKey => $borderStyleValue) {
//                                    echo $borderStyleKey.' = '.$borderStyleValue.'<br />';
                                    switch ($borderStyleKey) {
                                        case 'LineStyle' :
                                                $thisBorder['style'] = PHPExcel_Style_Border::BORDER_MEDIUM;
//                                                $thisBorder['style'] = $borderStyleValue;
                                                break;
                                        case 'Weight' :
//                                                $thisBorder['style'] = $borderStyleValue;
                                                break;
                                        case 'Position' :
                                                $borderPosition = strtolower($borderStyleValue);
                                                break;
                                        case 'Color' :
                                                $borderColour = substr($borderStyleValue,1);
                                                $thisBorder['color']['rgb'] = $borderColour;
                                                break;
                                    }
                                }
                                if (count($thisBorder) > 0) {
                                    if (($borderPosition == 'left') || ($borderPosition == 'right') || ($borderPosition == 'top') || ($borderPosition == 'bottom')) {
                                        $this->_styles[$styleID]['borders'][$borderPosition] = $thisBorder;
                                    }
                                }
                            }
                            break;
                    case 'Font' :
                            foreach($styleAttributes as $styleAttributeKey => $styleAttributeValue) {
//                                echo $styleAttributeKey.' = '.$styleAttributeValue.'<br />';
                                $styleAttributeValue = (string) $styleAttributeValue;
                                switch ($styleAttributeKey) {
                                    case 'FontName' :
                                            $this->_styles[$styleID]['font']['name'] = $styleAttributeValue;
                                            break;
                                    case 'Size' :
                                            $this->_styles[$styleID]['font']['size'] = $styleAttributeValue;
                                            break;
                                    case 'Color' :
                                            $this->_styles[$styleID]['font']['color']['rgb'] = substr($styleAttributeValue,1);
                                            break;
                                    case 'Bold' :
                                            $this->_styles[$styleID]['font']['bold'] = true;
                                            break;
                                    case 'Italic' :
                                            $this->_styles[$styleID]['font']['italic'] = true;
                                            break;
                                    case 'Underline' :
                                            if (self::identifyFixedStyleValue($underlineStyles,$styleAttributeValue)) {
                                                $this->_styles[$styleID]['font']['underline'] = $styleAttributeValue;
                                            }
                                            break;
                                }
                            }
                            break;
                    case 'Interior' :
                            foreach($styleAttributes as $styleAttributeKey => $styleAttributeValue) {
//                                echo $styleAttributeKey.' = '.$styleAttributeValue.'<br />';
                                switch ($styleAttributeKey) {
                                    case 'Color' :
                                            $this->_styles[$styleID]['fill']['color']['rgb'] = substr($styleAttributeValue,1);
                                            break;
                                }
                            }
                            break;
                    case 'NumberFormat' :
                            foreach($styleAttributes as $styleAttributeKey => $styleAttributeValue) {
//                                echo $styleAttributeKey.' = '.$styleAttributeValue.'<br />';
                                $styleAttributeValue = str_replace($fromFormats,$toFormats,$styleAttributeValue);
                                switch ($styleAttributeValue) {
                                    case 'Short Date' :
                                            $styleAttributeValue = 'dd/mm/yyyy';
                                            break;
                                }
                                if ($styleAttributeValue > '') {
                                    $this->_styles[$styleID]['numberformat']['code'] = $styleAttributeValue;
                                }
                            }
                            break;
                    case 'Protection' :
                            foreach($styleAttributes as $styleAttributeKey => $styleAttributeValue) {
//                                echo $styleAttributeKey.' = '.$styleAttributeValue.'<br />';
                            }
                            break;
                }
            }
//            print_r($this->_styles[$styleID]);
//            echo '<hr />';
        }
//        echo '<hr />';

        $worksheetID = 0;
        $xml_ss = $xml->children($namespaces['ss']);
        foreach($xml_ss->Worksheet as $worksheet) {
            $worksheet_ss = $worksheet->attributes($namespaces['ss']);

            if ((isset($this->_loadSheetsOnly)) && (isset($worksheet_ss['Name'])) &&
                (!in_array($worksheet_ss['Name'], $this->_loadSheetsOnly))) {
                continue;
            }

//            echo '<h3>Worksheet: ',$worksheet_ss['Name'],'<h3>';
//
            // Create new Worksheet
            $objPHPExcel->createSheet();
            $objPHPExcel->setActiveSheetIndex($worksheetID);
            if (isset($worksheet_ss['Name'])) {
                $worksheetName = (string) $worksheet_ss['Name'];
                $objPHPExcel->getActiveSheet()->setTitle($worksheetName);
            }

            $columnID = 'A';
            if (isset($worksheet->Table->Column)) {
                foreach($worksheet->Table->Column as $columnData) {
                    $columnData_ss = $columnData->attributes($namespaces['ss']);
                    if (isset($columnData_ss['Index'])) {
                        $columnID = PHPExcel_Cell::stringFromColumnIndex($columnData_ss['Index']-1);
                    }
                    if (isset($columnData_ss['Width'])) {
                        $columnWidth = $columnData_ss['Width'];
//                        echo '<b>Setting column width for '.$columnID.' to '.$columnWidth.'</b><br />';
                        $objPHPExcel->getActiveSheet()->getColumnDimension($columnID)->setWidth($columnWidth / 5.4);
                    }
                    ++$columnID;
                }
            }

            $rowID = 1;
            if (isset($worksheet->Table->Row)) {
                foreach($worksheet->Table->Row as $rowData) {
                    $rowHasData = false;
                    $row_ss = $rowData->attributes($namespaces['ss']);
                    if (isset($row_ss['Index'])) {
                        $rowID = (integer) $row_ss['Index'];
                    }
//                    echo '<b>Row '.$rowID.'</b><br />';

                    $columnID = 'A';
                    foreach($rowData->Cell as $cell) {

                        $cell_ss = $cell->attributes($namespaces['ss']);
                        if (isset($cell_ss['Index'])) {
                            $columnID = PHPExcel_Cell::stringFromColumnIndex($cell_ss['Index']-1);
                        }
                        $cellRange = $columnID.$rowID;

                        if (!is_null($this->getReadFilter())) {
                            if (!$this->getReadFilter()->readCell($columnID, $rowID, $worksheetName)) {
                                continue;
                            }
                        }

                        if ((isset($cell_ss['MergeAcross'])) || (isset($cell_ss['MergeDown']))) {
                            $columnTo = $columnID;
                            if (isset($cell_ss['MergeAcross'])) {
                                $columnTo = PHPExcel_Cell::stringFromColumnIndex(PHPExcel_Cell::columnIndexFromString($columnID) + $cell_ss['MergeAcross'] -1);
                            }
                            $rowTo = $rowID;
                            if (isset($cell_ss['MergeDown'])) {
                                $rowTo = $rowTo + $cell_ss['MergeDown'];
                            }
                            $cellRange .= ':'.$columnTo.$rowTo;
                            $objPHPExcel->getActiveSheet()->mergeCells($cellRange);
                        }

                        $cellIsSet = $hasCalculatedValue = false;
                        $cellDataFormula = '';
                        if (isset($cell_ss['Formula'])) {
                            $cellDataFormula = $cell_ss['Formula'];
                            // added this as a check for array formulas
                            if (isset($cell_ss['ArrayRange'])) {
                                $cellDataCSEFormula = $cell_ss['ArrayRange'];
//                                echo "found an array formula at ".$columnID.$rowID."<br />";
                            }
                            $hasCalculatedValue = true;
                        }
                        if (isset($cell->Data)) {
                            $cellValue = $cellData = $cell->Data;
                            $type = PHPExcel_Cell_DataType::TYPE_NULL;
                            $cellData_ss = $cellData->attributes($namespaces['ss']);
                            if (isset($cellData_ss['Type'])) {
                                $cellDataType = $cellData_ss['Type'];
                                switch ($cellDataType) {
                                    /*
                                    const TYPE_STRING        = 's';
                                    const TYPE_FORMULA        = 'f';
                                    const TYPE_NUMERIC        = 'n';
                                    const TYPE_BOOL            = 'b';
                                    const TYPE_NULL            = 's';
                                    const TYPE_INLINE        = 'inlineStr';
                                    const TYPE_ERROR        = 'e';
                                    */
                                    case 'String' :
                                            $type = PHPExcel_Cell_DataType::TYPE_STRING;
                                            break;
                                    case 'Number' :
                                            $type = PHPExcel_Cell_DataType::TYPE_NUMERIC;
                                            $cellValue = (float) $cellValue;
                                            if (floor($cellValue) == $cellValue) {
                                                $cellValue = (integer) $cellValue;
                                            }
                                            break;
                                    case 'Boolean' :
                                            $type = PHPExcel_Cell_DataType::TYPE_BOOL;
                                            $cellValue = ($cellValue != 0);
                                            break;
                                    case 'DateTime' :
                                            $type = PHPExcel_Cell_DataType::TYPE_NUMERIC;
                                            $cellValue = PHPExcel_Shared_Date::PHPToExcel(strtotime($cellValue));
                                            break;
                                    case 'Error' :
                                            $type = PHPExcel_Cell_DataType::TYPE_ERROR;
                                            break;
                                }
                            }

                            if ($hasCalculatedValue) {
//                                echo 'FORMULA<br />';
                                $type = PHPExcel_Cell_DataType::TYPE_FORMULA;
                                $columnNumber = PHPExcel_Cell::columnIndexFromString($columnID);
                                if (substr($cellDataFormula,0,3) == 'of:') {
                                    $cellDataFormula = substr($cellDataFormula,3);
//                                    echo 'Before: ',$cellDataFormula,'<br />';
                                    $temp = explode('"',$cellDataFormula);
                                    $key = false;
                                    foreach($temp as &$value) {
                                        //    Only replace in alternate array entries (i.e. non-quoted blocks)
                                        if ($key = !$key) {
                                            $value = str_replace(array('[.','.',']'),'',$value);
                                        }
                                    }
                                } else {
                                    //    Convert R1C1 style references to A1 style references (but only when not quoted)
//                                    echo 'Before: ',$cellDataFormula,'<br />';
                                    $temp = explode('"',$cellDataFormula);
                                    $key = false;
                                    foreach($temp as &$value) {
                                        //    Only replace in alternate array entries (i.e. non-quoted blocks)
                                        if ($key = !$key) {
                                            preg_match_all('/(R(\[?-?\d*\]?))(C(\[?-?\d*\]?))/',$value, $cellReferences,PREG_SET_ORDER+PREG_OFFSET_CAPTURE);
                                            //    Reverse the matches array, otherwise all our offsets will become incorrect if we modify our way
                                            //        through the formula from left to right. Reversing means that we work right to left.through
                                            //        the formula
                                            $cellReferences = array_reverse($cellReferences);
                                            //    Loop through each R1C1 style reference in turn, converting it to its A1 style equivalent,
                                            //        then modify the formula to use that new reference
                                            foreach($cellReferences as $cellReference) {
                                                $rowReference = $cellReference[2][0];
                                                //    Empty R reference is the current row
                                                if ($rowReference == '') $rowReference = $rowID;
                                                //    Bracketed R references are relative to the current row
                                                if ($rowReference{0} == '[') $rowReference = $rowID + trim($rowReference,'[]');
                                                $columnReference = $cellReference[4][0];
                                                //    Empty C reference is the current column
                                                if ($columnReference == '') $columnReference = $columnNumber;
                                                //    Bracketed C references are relative to the current column
                                                if ($columnReference{0} == '[') $columnReference = $columnNumber + trim($columnReference,'[]');
                                                $A1CellReference = PHPExcel_Cell::stringFromColumnIndex($columnReference-1).$rowReference;
                                                    $value = substr_replace($value,$A1CellReference,$cellReference[0][1],strlen($cellReference[0][0]));
                                            }
                                        }
                                    }
                                }
                                unset($value);
                                //    Then rebuild the formula string
                                $cellDataFormula = implode('"',$temp);
//                                echo 'After: ',$cellDataFormula,'<br />';
                            }

//                            echo 'Cell '.$columnID.$rowID.' is a '.$type.' with a value of '.(($hasCalculatedValue) ? $cellDataFormula : $cellValue).'<br />';
//
                            $objPHPExcel->getActiveSheet()->getCell($columnID.$rowID)->setValueExplicit((($hasCalculatedValue) ? $cellDataFormula : $cellValue),$type);
                            if ($hasCalculatedValue) {
//                                echo 'Formula result is '.$cellValue.'<br />';
                                $objPHPExcel->getActiveSheet()->getCell($columnID.$rowID)->setCalculatedValue($cellValue);
                            }
                            $cellIsSet = $rowHasData = true;
                        }

                        if (isset($cell->Comment)) {
//                            echo '<b>comment found</b><br />';
                            $commentAttributes = $cell->Comment->attributes($namespaces['ss']);
                            $author = 'unknown';
                            if (isset($commentAttributes->Author)) {
                                $author = (string)$commentAttributes->Author;
//                                echo 'Author: ',$author,'<br />';
                            }
                            $node = $cell->Comment->Data->asXML();
//                            $annotation = str_replace('html:','',substr($node,49,-10));
//                            echo $annotation,'<br />';
                            $annotation = strip_tags($node);
//                            echo 'Annotation: ',$annotation,'<br />';
                            $objPHPExcel->getActiveSheet()->getComment( $columnID.$rowID )
                                                            ->setAuthor( $author )
                                                            ->setText($this->_parseRichText($annotation) );
                        }

                        if (($cellIsSet) && (isset($cell_ss['StyleID']))) {
                            $style = (string) $cell_ss['StyleID'];
//                            echo 'Cell style for '.$columnID.$rowID.' is '.$style.'<br />';
                            if ((isset($this->_styles[$style])) && (count($this->_styles[$style]) > 0)) {
//                                echo 'Cell '.$columnID.$rowID.'<br />';
//                                print_r($this->_styles[$style]);
//                                echo '<br />';
                                if (!$objPHPExcel->getActiveSheet()->cellExists($columnID.$rowID)) {
                                    $objPHPExcel->getActiveSheet()->getCell($columnID.$rowID)->setValue(NULL);
                                }
                                $objPHPExcel->getActiveSheet()->getStyle($cellRange)->applyFromArray($this->_styles[$style]);
                            }
                        }
                        ++$columnID;
                    }

                    if ($rowHasData) {
                        if (isset($row_ss['StyleID'])) {
                            $rowStyle = $row_ss['StyleID'];
                        }
                        if (isset($row_ss['Height'])) {
                            $rowHeight = $row_ss['Height'];
//                            echo '<b>Setting row height to '.$rowHeight.'</b><br />';
                            $objPHPExcel->getActiveSheet()->getRowDimension($rowID)->setRowHeight($rowHeight);
                        }
                    }

                    ++$rowID;
                }
            }
            ++$worksheetID;
        }

        // Return
        return $objPHPExcel;
    }

    private function _parseRichText($is = '') {
        $value = new PHPExcel_RichText();

        $value->createText($is);

        return $value;
    }

}
